Sisu: Release your inner strength

It’s all about balance

At Sisu, we are committed to helping Canadians find their perfect balance. Our line of natural health products is driven by innovative, clinically-validated ingredients and industry-leading environmental awareness.

At Sisu, we acknowledge the effort that Canadians put forth every day to stay on top of the seemingly endless stream of deadlines, tasks, and unexpected challenges. As such, we expect no less of ourselves, constantly striving to offer the highest quality, most effective products on the market. Our numerous awards for innovation and consumer satisfaction only reinforce this belief, encouraging us to continue helping others enjoy lives that are healthy, happy and productive: in perfect balance.  Learn more about our brand and guiding principles here. 

Check out our videos and articles below for our tips on how to live a full, balanced, and healthy life.

You can also read our digital magazine here.





Extraordinary determination, courage and resoluteness in the face of extreme adversity. An action mindset which enables individuals to reach beyond their present limitations, take action against all odds, and transform barriers into frontiers.

While there is no direct English translation, the Finnish word “sisu” truly encapsulates what we stand for, the products we stand behind, and the people we serve:

Release your Inner Strength,
with Sisu.


In the world of vitamin C’s, only Ester-C® provides 24-hour immune support. Ester-C is also pH neutral, gentle on the stomach and due to active vitamin C metabolites, it is clinically proven to be absorbed faster and remain in the body longer. Ester-C® Supreme is citrus-free, and is enhanced with immune-boosting larch arabinogalactan and antioxidant bioflavonoids to strengthen immunity and provide antihistamine support, especially during cold and flu season.

More great products from Sisu

No one has time to get sick! Feel better faster and get back to the life you love with Sisu Cold & Flu Rescue with Ester-C®. A unique formulation to relieve cold and flu symptoms and upper respiratory tract infection.

Vitamin D is essential for calcium absorption and helps support bone density and reduce fractures. Tiny, fast-dissolving tablets, lactose free, no added sweeteners, colours or flavours.

Find your calm with Sisu Magnesium Relaxation Blend, a great-tasting powder containing magnesium bisglycinate/citrate, with GABA and L-Theanine, to promote relaxation and help improve sleep.

Sisu Integris features LP299V®, clinically-proven to support digestion by promoting gut flora diversity. True potency of 20 or 30 billion live probiotic cultures… GUARANTEED.

Read our magazine

Great gut health, stress-busting strategies, family wellness and more!